Light therapy/phototherapy involves exposing patient to an artificial light source during winter months to relieve seasonal depression. the  light source must be very bright, full spectrum light usually 2500 lux.

Indications

bulimia, sleep maintenance insomnia, seasonal depression

Adverse effects

nausea, eye irritation, headache

contraindications 

glaucoma, cataract and photosenistizing medications.

 

Reference:

R.Shreevani, 3rd edition, Jaypee Publications, Page No:131

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